A hybrid bus is a type of public transportation vehicle that combines two power sources: a traditional internal combustion engine and an electric motor. This combination allows the bus to operate more efficiently, reducing fuel consumption and lowering emissions compared to standard diesel buses. Hybrid buses are designed to improve air quality in urban areas while providing reliable service. These buses often use regenerative braking, which captures energy typically lost during braking and stores it for later use. Many cities are adopting hybrid buses as part of their efforts to promote sustainable transportation and reduce their carbon footprint, contributing to a cleaner environment for residents.